@article{JEMS_2006_8_2_a9,
     author = {Patricio A. Felmer and Salom\'e Mart{\'\i}nez and Kazunaga Tanaka},
     title = {On the number of positive solutions of singularly perturbed {1D} {NLS}},
     journal = {Journal of the European Mathematical Society},
     pages = {253--268},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {2006},
     doi = {10.4171/jems/51},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/51/}
}